Database producers

Databases of the producers listed here are offered directly or by database hosts.

• Beilstein (Beilstein Information Systems)
• BIOSIS (Biosciences Information Service, Philadelphia PA)
• CAS (Chemical Abstracts Service. Columbus OH)
• CCDC (Cambridge Crystallographic Data Centre)
• Derwent (Patents)
• FIZ Chemie (Fachinformationszentrum Chemie, Berlin)
• ISI (Institute for Scientific Information, Philadelphia PA)